Furtado, P. G. F., T. Hirashima, Y. Hayashi, and K. Maeda. “Application Focused on Structural Comprehension of Mathematics Contextual Problems for Kindergarten Students”. Research and Practice in Technology Enhanced Learning, vol. 14, Jan. 2019, https://rptel.apsce.net/index.php/RPTEL/article/view/2019-14002.